Sometimes it is hard to live your life "elsewhere". Elsewhere being not the place you were born. Some people like travelling, like being everywhere all at once (no pun intended and not trying to quote a movie title here). But others do like to be in certain places.
The movie is not just about homesickness though. It is about love - about trying to make things work. Being a couple, understanding what needs the other person needs and what has to be done, that both are happy. Well that is the thought behind it at least ... as you can imagine and as life is ... it is not that simple.
If that is enough for you, the movie will tick all the right boxes ... it is a pacing issue for some, a drama for others (no pun intended) or just life as we live it ...